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Discussion summary
YOUR RESEARCHARP Carrier Through Bolt Kit
Leading reported evidence
Check clearances
Performed · outcome unconfirmed
No successful repair reported for this finding.
0
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0
Unsuccessful attempts
1
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Read evidence and context
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Performed · outcome unconfirmed · Original poster
I spoke with the machinist today that worked on my heads and checked the clearances for me on my main and rod bearings and he feels the stock bolts are fine.
Outcome qualification: Negation, uncertainty or missing explicit repair resolution overrides the raw extraction signal.
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Leading evidence: 'Check clearances' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check clearances' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
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Check ln engineering, summit racing, jegs, autoplicity, and fcp euro
Performed · outcome unconfirmed
No successful repair reported for this finding.
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Unsuccessful attempts
1
Discussions
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Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that performed work without a confirmed outcome
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Performed · outcome unconfirmed
WhIle ARP generally are tougher than average steel, don't put it past Porsche to have used pretty good bolts on the Carrier.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
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Suggestion
If you watch the Jake Raby/Flat Six assembly DVD’s you will see that he uses the genuine Porsche thru bolts and says that unless you are building for an application that would require aftermarket bolts these are fine.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
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Suggestion · Original poster
I find it strange that Porsche would use torque to yield bolts on the carrier but not on the heads.
These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.
Check clearances
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that performed work without a confirmed outcome
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Performed · outcome unconfirmed · Original poster
I spoke with the machinist today that worked on my heads and checked the clearances for me on my main and rod bearings and he feels the stock bolts are fine.
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion
If you watch the Jake Raby/Flat Six assembly DVD’s you will see that he uses the genuine Porsche thru bolts and says that unless you are building for an application that would require aftermarket bolts these are fine.
Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.
13 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Rennlist: 1 discussions
0 evidence records excluded for query context · 0 excluded by outcome qualification · 1 adjusted by outcome qualification.
0 acknowledgements have no verified action link; they do not establish a repair result.
Generation: 20261026T130754Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
The ARP Carrier Through Bolt Kit (204-5001) is currently on backorder from ARP until January. I've checked LN Engineering, Summit Racing, Jegs, Autoplicity, and FCP Euro. Does anyone know of anyone that may have a set in stock? I don't want to wait until January or later to start putting my engine back together, and I don't want to use stock bolts at this time since I upgraded everything else during this build.
Try these guys in Canada
(1) Product List – Performance Improvements
Although might be sitting in the same container for all these vendors. This website says to contact with ETA.....
If you watch the Jake Raby/Flat Six assembly DVD’s you will see that he uses the genuine Porsche thru bolts and says that unless you are building for an application that would require aftermarket bolts these are fine. When you think about these bolts they are not a high stress area. So I guess you should ask yourself if you really need the ARP bolts for your build and if it is worth waiting until January (or possibly longer).
I did notice that on the video as well. I spoke with the machinist today that worked on my heads and checked the clearances for me on my main and rod bearings and he feels the stock bolts are fine. He doesn't trust the rod bolts and the rods but stated he never has seen a carrier through-bolt fail. He did show me a mangled rod from a failed bolt or bad rod.
I have found a set in England, but with shipping and currency exchange, I will be paying double ($253 vs $125). In the grand scheme of things, this is 1% of the build.
It's a tough decision since I have upgraded everything in the bottom end (K1 Rods with ARP Bolts, Billet IMS Paddle, Pinned IMS Shaft, Chromoly Oil Pump Drive, and IMS Solution) but these bolts would be the factory TTY bolts.
I bit the bullet and paid $245 for the bolts. I found a coupon. I feel that the Porsche bolts would have worked, but it would have been in the back of my mind forever that I didn't get to install the ARP bolts. Also, in a worst-case scenario and I ever need to rebuild, I won't need to buy these bolts again. I guess all this was worth $120 in my mind.
What are the actual differences?
WhIle ARP generally are tougher than average steel, don't put it past Porsche to have used pretty good bolts on the Carrier.
Its weird where they did and didn't try and save money on the 996..
The Porsche carrier bolts seem to hold up fine and are not a real weak point. The ARP is just overkill and most likely not needed. The big difference is they are reusable, not that I expect to ever have to be in this engine again. If I didn't find them, I probably would have ordered the factory bolts and just used them. I find it strange that Porsche would use torque to yield bolts on the carrier but not on the heads. It's almost the reverse of what you would expect.
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